bsp_iwdg ok
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/*
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* @Author : stark1898y 1658608470@qq.com
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* @Date : 2024-12-15 16:13:37
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* @LastEditors : stark1898y 1658608470@qq.com
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* @LastEditTime : 2024-12-15 16:13:37
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* @FilePath : \BLE_TYQ_CH592F - 副本\BSP\inc\bsp_iwdg.h
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* @Description :
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*
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* Copyright (c) 2024 by yzy, All Rights Reserved.
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*/
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/*
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* @Author : stark1898y 1658608470@qq.com
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* @Date : 2024-12-14 10:51:01
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* @LastEditors : stark1898y 1658608470@qq.com
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* @LastEditTime : 2024-12-15 11:16:24
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* @FilePath : \BLE_TYQ_CH592F\BSP\inc\bsp_iwdg.h
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* @Description :
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*
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* Copyright (c) 2024 by yzy, All Rights Reserved.
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*/
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#ifndef __BSP_IWDG_H__
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#define __BSP_IWDG_H__
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#include "CONFIG.h"
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#define RB_RLR 0x0FFF // RW, watch-dog counter reload (write protect)
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#define RB_PR 0x7000 // PR, prescale (write protect)
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#define RB_PVU 0x8000 // RO, register update flag (write protect)
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#define RB_COUNT 0xFF0000 // RO, watch-dog down counter
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#define RB_STOP_EN 0x20000000 // RW, watch-dog stop enable (write protect)
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#define RB_WR_PROTECT 0x40000000 // RO, write protect
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#define RB_IWDG_EN 0x80000000 // RO, watch-dog enable
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void IWDG_Init(uint16_t ms);
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// 需要定时调用喂狗
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// 在看门狗键寄存器 (R32_IWDG_KR) 中，软件要以一定的间隔写入 0xAAAA，重装载计数值，这就是喂狗的操作。
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// 否则，当计数器为 0 时，看门狗会产生复位。
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#define FEED_IWDG() {R32_IWDG_KR=0xAAAA;}
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void ShowRestartReason(void);
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#endif // !__BSP_IWDG_H__
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/*
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* @Author : stark1898y 1658608470@qq.com
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* @Date : 2024-12-15 16:13:41
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* @LastEditors : stark1898y 1658608470@qq.com
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* @LastEditTime : 2024-12-15 16:13:42
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* @FilePath : \BLE_TYQ_CH592F - 副本\BSP\src\bsp_iwdg.c
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* @Description :
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*
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* Copyright (c) 2024 by yzy, All Rights Reserved.
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*/
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#include "bsp_iwdg.h"
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#include "bsp_uart.h"
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#include "log.h"
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// https://www.cnblogs.com/debugdabiaoge/p/17580033.html
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// https://www.cnblogs.com/risc5-ble/p/17853714.html
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#undef LOG_ENABLE
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#define LOG_ENABLE 1
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#undef LOG_TAG
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#define LOG_TAG "idwg"
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// 32k rc
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// div 0:4 | 1:8 | 2:16 | 3:32 |
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// 4:64 | 5:128 | 6:256 | 7:512(32K分频512，时钟62.5Hz) |
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// reload max 4095
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// 独立看门狗（IWDG）由专用的内部低速时钟（LSI）驱动，能够在低功耗模式下正常工作。
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void IWDG_Init(uint16_t ms)
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{
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uint16_t div = 512;
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float tick_ms = 1000 / (32000 / 512);
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uint16_t reload = (ms / tick_ms) + 1;
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// 解除IWDG保护
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R32_IWDG_KR = 0x5555;
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R32_IWDG_CFG = (RB_PR & (div << 12)) | (RB_STOP_EN) | (reload & RB_RLR);
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// 开启IWDG保护
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R32_IWDG_KR = 0xCCCC;
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logDebug("R32_IWDG_CFG = %X", R32_IWDG_CFG);
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}
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// #define RB_RESET_FLAG 0x07 // RO: recent reset flag
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// #define RST_FLAG_SW 0x00
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// #define RST_FLAG_RPOR 0x01
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// #define RST_FLAG_WTR 0x02
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// #define RST_FLAG_MR 0x03
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// //#define RST_FLAG_GPWSM 0x04 // RO, power on reset flag during sleep/shutdown: 0=no power on reset during sleep/shutdown, 1=power on reset occurred during sleep/shutdown
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// #define RST_FLAG_GPWSM 0x05
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// // RB_RESET_FLAG: recent reset flag
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// // 000 - SR, software reset, by RB_SOFTWARE_RESET=1 @RB_WDOG_RST_EN=0
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// // 001 - RPOR, real power on reset
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// // 010 - WTR, watch-dog timer-out reset
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// // 011 - MR, external manual reset by RST pin input low
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// // 101 - GRWSM, global reset by waking under shutdown mode
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// 1?? - LRW, power on reset occurred during sleep
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// 打印复位状态寄存器，显示复位原因
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// 最近一次复位状态：
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// 000：软件复位 SR（RB_WDOG_RST_EN=0时软件复位可产生此状态，否则可复位但不产生此状态）；
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// 001：上电复位 RPOR；
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// 010：看门狗超时复位 WTR；
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// 011：外部手动复位 MR；
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// 101：从下电模式唤醒时的复位 GRWSM；
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// 100/110/111：唤醒复位 LRW，且此前的上一次复位分别是 SR/WTR/MR。
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void ShowRestartReason(void)
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{
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uint8_t reason = R8_RESET_STATUS&0x07;
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logDebug("R8_RESET_STATUS = %02x", reason);
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switch (reason)
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{
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case RST_FLAG_SW:
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logDebug("RST_FLAG_SW");
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break;
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case RST_FLAG_RPOR:
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logDebug("RST_FLAG_RPOR");
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break;
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case RST_FLAG_WTR:
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logDebug("RST_FLAG_WTR");
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break;
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case RST_FLAG_MR:
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logDebug("RST_FLAG_MR");
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break;
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case RST_FLAG_GPWSM:
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logDebug("RST_FLAG_GPWSM");
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break;
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case 0x04:
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logDebug("LRW, last SR");
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break;
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case 0x06:
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logDebug("LRW, last WTR");
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break;
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case 0x07:
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logDebug("LRW, last MR");
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default:
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break;
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}
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}
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